 fuel tank lines question |
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| rosenfe |
 Jan 14 2015, 10:24 AM
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#1
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Senior Member  Group: Members Posts: 549 Joined: 14-October 13 From: northern california Member No.: 16,512 Region Association: None  |
on my 73,im assuming that the larger copper line with screen in tank is the supply line and that smaller copper line is the return and that if i have carbs,the smaller line is not needed., and can be blocked off.?
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| rhodyguy |
Jan 14 2015, 10:40 AM
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#2
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,081 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
Correct. A piece of modern fuel line, a shouldered bolt w/clamp and you're good to go.
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| Kansas 914 |
Jan 14 2015, 10:46 AM
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#3
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Advanced Member Group: Members Posts: 2,999 Joined: 1-March 03 From: Durango, Colorado Member No.: 373 Region Association: Rocky Mountains 
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QUOTE(rhodyguy @ Jan 14 2015, 09:40 AM)  Correct. A piece of modern fuel line, a shouldered bolt w/clamp and you're good to go. (IMG:style_emoticons/default/agree.gif) While there are more elegant ways to do this - I did the exact same thing years ago. Like any fuel line inspect the clamped line regularly. |
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| Larmo63 |
Jan 14 2015, 10:53 AM
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#4
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Advanced Member Group: Members Posts: 4,264 Joined: 3-March 14 From: San Clemente, Ca Member No.: 17,068 Region Association: Southern California |
So, I only need to have the single line from tank to the rear of the car….?
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| JawjaPorsche |
Jan 14 2015, 11:22 AM
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#5
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Advanced Member Group: Members Posts: 3,463 Joined: 23-July 11 From: Clayton, Georgia Member No.: 13,351 Region Association: South East States |
QUOTE(Larmo63 @ Jan 14 2015, 11:53 AM) So, I only need to have the single line from tank to the rear of the car….? If carbs only one line is needed, FI needs a return line. |
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| brant |
Jan 14 2015, 11:53 AM
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#6
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914 Wizard Group: Members Posts: 11,625 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains 
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A return line with carbs keeps fuel cooler and helps with boiling in extreme heat.
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| PanelBilly |
Jan 14 2015, 05:48 PM
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#7
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914 Guru Group: Members Posts: 5,807 Joined: 23-July 06 From: Kent, Wa Member No.: 6,488 Region Association: Pacific Northwest
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Check my gulf blue thread. I just posted a photo of the regulator I i stalled for the carbs. I've got a feedi e from the gas tank and a return line back to it. Fuel will continue to circulate and the regulator pulls off what's needed for the carbs. Keeps the fuel cooler and stirs the tank
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| colingreene |
Jan 15 2015, 03:08 AM
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#8
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Senior Member Group: Members Posts: 729 Joined: 17-October 13 From: Southern California Member No.: 16,526 Region Association: Southern California |
I just put both in, that way if i ever swap to something injected and overhead cam....
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| mtndawg |
Jan 15 2015, 06:44 PM
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#9
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Member Group: Members Posts: 414 Joined: 26-January 09 From: Granite Bay, Ca Member No.: 9,985 Region Association: None
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Not to bogart your thread, but...do you run 9mm line from the tank to the soft line that goes into the tunnel then use 7mm in the engine bay?
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| bdstone914 |
Jan 15 2015, 07:07 PM
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#10
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bdstone914 Group: Members Posts: 4,522 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
QUOTE(mtndawg @ Jan 15 2015, 06:44 PM) Not to bogart your thread, but...do you run 9mm line from the tank to the soft line that goes into the tunnel then use 7mm in the engine bay? I measured a supply nipple and it measured 10mm O.D. The return nipple was 8mm. This would be the case for 70-74 cars and 75-76 cars used 10mm on both gas tank nipples. Lines for the engine compartment are 8mm for the fuel loop hoses. |
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